TY - BOOK AU - Gupta, J. B. TI - Theory and performance of electrical machines : D. C. machines, A. C. machines and polyphase circuits in S. I. units SN - 9788185749150 U1 - 621.31042 PY - 2009/// CY - Delhi PB - S. K. Kataria & sons KW - Electrical machines ER -